Pipes glowing cherry red???
Road Captain
Joined: Oct 2007
Posts: 515
Likes: 0
From: The Woodlands, TX
RE: Pipes glowing cherry red???
A late ignition timing causes the mixture to still be burning when the exhaust valve opens, heats the pipe red hot. A fuel mixture too rich can cause heating also, but usually fuel foul plug first. A burned exhaust valve can also cause heating
Either way I'd take it in to get checked out
Either way I'd take it in to get checked out
Road Master
Joined: Dec 2007
Posts: 1,125
Likes: 22
From: Phoenix, AZ
RE: Pipes glowing cherry red???
It's just running lean. That happens from using that download bandage instead of a SERT orsome other fuel management system.
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Cruiser
Joined: Nov 2007
Posts: 113
Likes: 0
From: Conroe
RE: Pipes glowing cherry red???
i found out, from local mechanic that it is normal for pipes to get like that esp. at the head, now if it was further down pipe then i would have a problem, but he told me not to worry
Road Master
Joined: Dec 2007
Posts: 1,125
Likes: 22
From: Phoenix, AZ
RE: Pipes glowing cherry red???
i found out, from local mechanic that it is normal for pipes to get like that esp. at the head, now if it was further down pipe then i would have a problem, but he told me not to worry
Road Warrior
Joined: Jun 2005
Posts: 1,334
Likes: 2
RE: Pipes glowing cherry red???
i found out, from local mechanic that it is normal for pipes to get like that esp. at the head, now if it was further down pipe then i would have a problem, but he told me not to worry
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Outstanding HDF Member
Joined: Nov 2006
Posts: 3,269
Likes: 12
From: NJ
RE: Pipes glowing cherry red???
Sitting still with no air flow..........This is normal at the head..........There is no problem..........My evo has done it since 84.......it can't be seen in bright light, but running while parked at night or in a shaded garage they will be red. Once you start moving, they cool down (air cooled engine)